Timken 3490/3420 Tapered Roller Bearing Cone And Cup

Timken 3490/3420 is a matched single-row tapered roller bearing assembly consisting of the 3490 cone and 3420 cup. It supports combined radial and axial loads while maintaining precise shaft alignment for reliable performance in wheel hubs, industrial gearboxes, conveyors, agricultural equipment, machinery, and other heavy-duty rotating systems. Key specifications include bore 1.5000 in (38.100 mm), outside diameter 3.1250 in (79.375 mm), and overall width 1.1563 in (29.370 mm) with cone width 1.1721 in (29.771 mm) and cup width 0.9375 in (23.813 mm); the assembly weighs approximately 0.70 kg (1.4 lb). The design uses through-hardened bearing steel, a stamped steel cage, and precision-ground raceways for high load capacity and long service life. Dynamic radial load rating is 105,000 N (23,500 lbf); static radial 119,000 N (26,800 lbf); dynamic axial Ca90 17,000 N (3,820 lbf); with factory-matched cone and cup and separable cone-and-cup construction for easier installation, inspection, and maintenance. Part number 3490/3420, manufactured by Timken, is commonly used in automotive wheel bearings, trailer axles, industrial gear drives, conveyor drives, and other heavy-duty rotating machinery.